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What Is a Wavefront?
In the simplest terminology,
a wavefront can be explained
by picturing light traveling
as a bundle of rays. If you
draw lines perpendicular to
the tips of a bundle of
light rays, you obtain what
is called a wavefront map.
In an eye with perfect
vision, the wavefront is
perfectly flat. The
wavefront of an imperfect
eye is irregular.
Types of distortions this
wavefront acquires as it
travels through the eye
provide valuable information
about vision errors and how
to correct them.
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